Exhibit 31.5

CERTIFICATIONS

I, Jeffrey M. Woosnam, certify that:

1.I have reviewed this Amendment No. 2 to the annual report on Form 10-K of Star Group, L.P.; and

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report.

/s/ JEFFREY M. WOOSNAM

Jeffrey M. Woosnam

President and Chief Executive Officer

Star Group, L.P.

Dated: May 16, 2025